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한국과 일본 대학생의 스포츠상황에 대한 도덕적 가치판단수준 비교
함정혜(Chung Hae Hahm) 한국여성체육학회 2013 한국여성체육학회지 Vol.27 No.1
The purpose of this study was to compare the differences of moral reasoning among general students, sports related majors students, and student athletes in Korea and Japan University. We collected total 612 out of 700 (315 from Korea, 297 from Japan) and 88 questionnaires were excluded questionnaire due to incompleteness and unreliable data. For this study, Hahm-Bellar Values Choice Inventory-16(HBVCI-16), which is a Moral Reasoning Questionnaire on Sports Activities, was used. The collected data was analyzed by t-test, one way ANOVA and two way ANOVA with using SPSS Var. 17.0 statistical package program and result were as follow. First, the Japan student`s overall score of moral reasoning were lower compare to Korean university students. Second, there were 1 % higher score of moral reasoning in woman against man and in younger subjects. Sports majored university students presented 1% higher score against other related students and higher grade students presented 5% higher score against lower grade students. Third, among student athletes of Korea and Japan, although there were no significant differences, it was 0.1% higher among those who engaged in individual sports and 5% higher score in those who have less sports career.
A Model for Computer-Aided Process Planning System in Flexible Manufacturing Systems
Kang, Young-Sig,Hahm, Hyo-Joon,Rim, Suk-Chul,Kim, Seung-Baum The Korean Society for Quality Management 1994 품질경영학회지 Vol.22 No.1
Most of computer-aided process planning(CAPP) systems have been developed to automate the process planning function. In this paper, we describe an analytical model for a CAPP system in order to improve the performance of production system in flexible manufacturing systems(FMSs) for computer intergrated manufacturing(CIM) architecture. This paper proposes an optimal process planning that minimizes the load time by minimizing the cycle time and the number of workstations using Kang and Hahm's heuristic approach so as to improve the performance of production system under the batch production of discrete products. We also perform simulation using SIMAN language to campare the line utilization of each for various product types. The proposed algorithm can be implemented in existing FMSs for on-line control of product quantity using programmable logic controllers(PLC) and communication devices.
Hahm, Young Hye,Hahm, Sung Ho,Jo, Hyoun Young,Ahn, Yeong Hee Hindawi 2018 International journal of analytical chemistry Vol.2018 No.-
<P>Glycosylation is one of the most important posttranslational modifications for proteins, including therapeutic antibodies, and greatly influences protein physiochemical properties. In this study, glycopeptide mapping of a reference and biosimilar recombinant antibodies (rAbs) was performed using liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) and an automated Glycoproteome Analyzer (GPA) algorithm. The tandem mass analyses for the reference and biosimilar samples indicate that this approach proves to be highly efficient in reproducing consistent analytical results and discovering the implications of different rAb production methods on glycosylation patterns. Furthermore, the comparative analysis of a mutagenized rAb glycoprotein proved that a single amino acid mutation in the Fc portion of the antibody molecule caused increased variations in glycosylation patterns. These variations were also detected by the mass spectrometry method efficiently. This mapping method, focusing on precise glycopeptide identification and comparison for the identified glycoforms, can be useful in differentiating aberrant glycosylation in biosimilar rAb products.</P>
Hahm, Doshik,Rhee, Tae Siek,Kim, Hae-Cheol,Park, Jisoo,Kim, Young-Nam,Shin, Hyoung Chul,Lee, SangHoon American Geophysical Union 2014 Journal of geophysical research. Oceans Vol.119 No.5
We observed O2/Ar in the surface waters of the Amundsen Sea, Antarctica, during the austral summers in 2011 and 2012 to investigate the variability of net community production (NCP). Corresponding to the typical peak phytoplankton bloom period, the O2/Ar of the Amundsen Sea Polynya (ASP) reached 30% in early January 2011 and had a strong positive correlation with the sea surface temperature (SST) and chlorophyll-a (Chl-a). In contrast, O2/Ar decreased to -10% in the sea ice zone (SIZ), which was likely associated with either net O2 consumption in the unlit area or the entrainment of deep water containing low dissolved oxygen. Near the terminal stage of the phytoplankton bloom in late February 2012, we observed the same contrasting O2/Ar features between the ASP and SIZ. However, the O2/Ar in the ASP was not >10%, which corresponded with the overall reduction in Chl-a, solar radiation, and SST compared with the corresponding values in 2011. The average net community production in the ASP was 119 +/- 79 mmol O2 m-2 d-1 in January 2011, and 23 +/- 14 mmol O2 m-2 d-1 in February 2012. The strong correlations of NCP with SST and mixed layer depth (MLD) indicate that the ASP phytoplankton bloom is likely initiated by a combination of increased light availability and SST in early summer. Low SST and variable fluorescence to maximum florescence ratio (Fv/Fm) in February indicate that decreased solar radiation and Fe availability are likely responsible for the phytoplankton bloom demise.
Tidal influence on the sea-to-air transfer of CH<sub>4</sub> in the coastal ocean
HAHM, DOSHIK,KIM, GUEBUEM,LEE, YONG-WOO,NAM, SUNGH-YUN,KIM, KYUNG-RYUL,KIM, KUH Munksgaard International Publishers 2006 Tellus. Series B, Chemical and physical meteorolog Vol.58 No.1
<P>ABSTRACT</P><P>We obtained real-time monitoring data of water temperature, salinity, wind, current, CH<SUB>4</SUB> and other oceanographic parameters in a coastal bay in the southern sea of Korea from July 8 to August 15, 2003, using an environmental monitoring buoy. In general, the transfer velocity of environmental gases across the air–sea interface is obtained exclusively from empirical relationships with wind speeds. However, our monitoring data demonstrate that the agitation of the aqueous boundary layer is controlled significantly by tidal turbulence, similar to the control exercised by wind stress in the coastal ocean. The sea-to-air transfer of CH<SUB>4</SUB> is enhanced significantly during spring tide due to an increase in the gas transfer velocity and vertical CH<SUB>4</SUB> transport from bottom water to the surface layer. Thus, our unique time-series results imply that the sea-to-air transfer of gases, such as CH<SUB>4</SUB>, DMS, DMHg, N<SUB>2</SUB>O, CO<SUB>2</SUB> and <SUP>222</SUP>Rn, from highly enriched coastal bottom waters, is controlled not only by episodic wind events but also by regular tidal turbulence in the coastal ocean.</P>
The molecular mechanisms of vitamin C on cell cycle regulation in B16F10 murine melanoma
Hahm, Eunsil,Jin, Dong-Hoon,Kang, Jae Seung,Kim, Young-In,Hong, Seung-Woo,Lee, Seung Koo,Kim, Ha Na,Jung, Da Jung,Kim, Jee Eun,Shin, Dong Hoon,Hwang, Young Il,Kim, Yeong Seok,Hur, Dae Young,Yang, Yool Wiley Subscription Services, Inc., A Wiley Company 2007 Journal of cellular biochemistry Vol.102 No.4
<P>Vitamin C has inconsistent effects on malignant tumor cells, which vary from growth stimulation to apoptosis induction. It is well known that melanoma cells are more susceptible to vitamin C than any other tumor cells, but the precise mechanism remains to be elucidated. In the present study, the proliferation of B16F10 melanoma cells was suppressed by vitamin C, which induced growth arrest in a dose-dependent manner without cytotoxic effects. Therefore, we investigated the changes in cell cycle distribution of B16F10 melanoma cells by staining DNAs with propidium iodide (PI). The growth inhibition of B16F10 melanoma by vitamin C was associated with an arrest of cell cycle distribution at G1 stage. In addition, the levels of p53-p21<SUP>Waf1/Cip1</SUP> increased during G1 arrest, which were essential for vitamin C-induced cell cycle arrest. The increased p21<SUP>Waf1/Cip1</SUP> inhibited CDK2. Moreover, the activity of p53-p21<SUP>Waf1/Cip1</SUP> pathway was closely related with the activation of checkpoint kinase 2 (Chk2). Inhibitor of the PI3K-family, LY294002 and the ATM/ATR inhibitor, caffeine, blocked vitamin C-induced growth arrest in B16F10 melanoma cells. These results suggest that vitamin C might be a potent agent to inhibit proliferative activity of melanoma cells via the regulation of Chk2-p53-p21<SUP>Waf1/Cip1</SUP> pathway. J. Cell. Biochem. 102: 1002–1010, 2007. © 2007 Wiley-Liss, Inc.</P>